Sectional boiler.



No.l82l,705. PATENTED MAY 29, 1906. l*

M. A. COOK.

SEGTIONAL BOILER.

APPLIGATION FILED MAY 1o, 1905.

4 SHEETS-SHEET 1y TZV' No. 821,705. PATENTED MAY 29, 1906.

M. A. COOK.

SBCTIONAL BOILER.

APPLICATION FILED MAY Io. 1905.

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No. 821,705. PATENTED MAY 29, 1906. M. A. 000K.

SBGTIONAL BOILER.

APPLICATION FILED MAY 10, 1905.

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Q6 Jfaurice: C20/ zu WW @d ATTORNEYS UNITED STATES PATENT OFFICE.

MAURICE ALEX. COOK, OF PEORIA, ILLINOIS, ASSIGNOR TO THE COOK HEATER COMPANY, OF PEORIA, ILLINOIS.

-SECTIONAL BOILER.

Specification of Letters Patent.

lc'atentect May 29, 1906.

Application "filed May l0, 1905. Serial No. 259.696.

y of Peoria, in the county of Peoria and State of Illinois, have invented a new and Improved Sectional Boiler and Generator, of which the following is a full, clear, and exact description.

This invention relates to boilers or generators, and it consists, substantially, in the construction and combinations of parts herein after particularly described, and pointed out in the claims.

. The invention has reference more espe cially to boilers or generators for hot water and steam to be used for heating and other purposes; and one of the principal objects thereof is to overcome numerous disadvantages and objections common to many other structures hitherto devised with like ends in view.

Another object is to provide a structure of the kind referred to which is sectional in character and readily taken apart and again put together and which is not incapacitated for use or operation in the event of any one or more of the sections thereof becoming cracked or broken.

A further object is to provide a structure of this kind which for given dimensions possesses a maximum water-containing capacity, besides presenting a maximum area of surface to the heat and products of combustion from the fire-chamber and which is also capable of ready access and easy repair and control.

A still further object is to provide a structure of the class mentioned which is economical in its consumption of fuel, as well as in other respects, and which is also strong and comparatively inexpensive in its embodiment, besides being well adapted for long and repeated service. y

vThe above and additional objects are attained by means substantially such as are illustrated in the accompanying drawings, in which similar characters of reference indicate corresponding parts in all the figures.

Figure l is a view in side elevation of a furnace provided with a boiler constructed in accord with this invention, parts of the furnace and boiler structure being broken away to show the internal construction thereof.

Fig. 2 is a vertical section upon the line 2 2 of Fig. 1. Fig. 3 is a front elevation of the furnace with parts broken away to show the internal construction. Fig. 4 is a perspective view of two oppositely-arranged coperating boiler-sections.. Fig. 5 is a vertical section as the same would appear on the line X X of Fig. 1. same would appear on the line Y Y of Fig. 1. Fig. 7 is a view in front elevation of a furnace with the front removed and with a boilerdome of different type from that shown in the preceding views, and Fig. 8 is a perspec-l tive view of a dome of the kind shown in Fig. 5.

Before proceeding with a more detailed description it may be stated that in the form of my improvements herein shown I employ a suitable furnace or casing in which are mounted, preferably, duplicate series of speciallyconstructed water-containing sections which are so organized as to form a fire-chamber and an ash-pit extending practically from Fig. 6 is a vertical section as the front to rear of the structure, the sections of each series having suitable water connection with each other and those of the two series being in communication with a steam-dome common to all the sections, the said furnace:

or casing being provided with doors for access to both the fire-chamber and ash-pit, as well as to suitable dampers or valves located in conduits or flues formed by the sections.

A suitable escape-flue is provided forv the smoke and other products of combustion and suitable air-supplies are also provided, and while I have herein represented my improvements in a certain selected embodiment it will be understood, of course, that I am notl limited to the precise details thereof in practice, since immaterial changes therein may be resorted to coming within the scope of my invention.

Specific reference being had to the drawings by the designating characters marked thereon, and more particularly to Figs. l to 4, 1, Fig. 3, represents a suitable furnace or casing, interi'orly of which are mounted duplicate series of boiler-sections 2 embodying improvements, said sections being organized into duplicate oppositely-disposedI serie/s,v for effective operation. As shown in Fig/ST1", 2, and 4, each of said sections 2 is hollow through IOO vertical side portion 3, thickest at the bottom, while projecting inwardly vand downwardly from which at the upper end thereof is a head 3a, having an inner hanging member 4, provided at the intersection thereof with the head, being an inward extension 5, the face 6 of which is preferably in a vertical plane, as shown. At the lower end of each of the said hanging members 4 is a branch 49, connecting with the side portion 3 of the section and provided with a number of pendent pockets 7, the same being preferably (though not essentially) tapered downwardly and of suitable depth, while above said pockets the section is constructed therethrough from front to rear with preferably rectangular openings 8 and 9, from the top or upper part of one or both of which may depend similar pockets-1.0, it being noted that each of the said pockets 7 and 10 may be provided with a central partition 11 (dotted lines, Fig. 2) to assist in the circulation of water through the section. The said top or upper part of opening 8 is formed by a branch 4b, corresponding to 4a, connecting with the inner hanging member 4 the side portion 3, while the top or upper part of opening 9 is formed by the head 3a, as will be understood from Fig. 4. When the sections of each series are properly organized, as in Fig. 1, the sides of said openings 8 and 9 form conduits or flues for the passage from end to end of the structure ofthe products of combustion, as will hereinafter be explained. Beginning at a point substantially in line with the top or upper part of each of the openings 9 the inner hanging` members 4 are somewhat reduced in dimensions longitudinally of the furnace at 12, soas to form between the adjacent or opposite facesof said members of each series of sections 2 the vertical passages 13, Fig. 1, which are in communication with the conduits formed by the openings 3 and 9, as well as with a central vertical chamber 14, formed between the in-` ner sides of the members, the upper part of said chamber being closed by the bringing together of the vertical faces 6 of the hereinbefore-mentioned inward extensions 5 of the sections 2 of the two series thereof. The sections of each series are preferably provided on the upper surfaces of the heads 3a thereof with suitable lugs 15, having alined openings therein, through which a rod 16, Figs. 2 and 3, may be inserted, if desired, for securing the sections together, and said sections are also provided on their outer lower sides with similarly-constructed lugs 16?, through which another rod 17 (dotted lines, Fig. 1, and full lines, Fig. 2) may be passed for the same purpose. Connecting the tops of the heads 3a of the sections of the two series is a steam-dome 18, the same communicating with said heads by means of vertical supporting-nipples 19 therefor. Also at the outer lower sides thereof the sections are connected with each other by means of headers 21, as shown, and it will be understood that in the event of any one or more of the sections becoming cracked or broken in use the same may be readily removed or disconnected from the remaining sections without in any manner interfering with the operation of the structure. Beneath the said pockets 7 the vertical side portions 3 of the sections form the sides of a firechamber 22, in which is supported, by means of inward notched extensions 23 of said side portions, a suitable grate 24, connected by suitable connecting means with a shakinglever 25. The said fire-chamber is in direct communication with the said chamber 14, and beneath the fire-chamber is the ash-pit 28, while supported in any suitable manner against the front faces of the foremost sections of the two series of sections is a waterfront 29, which is preferably in communication with the said sections.

Located a suitable distance beyond the rear faces of the rearward sections of the two series is a frame 30, extending the full height and width of the structure, and the same is provided with the upper and lower rectangular openings 30a and 30h, (see Figs. 1 and 6,) and disposed in front of the upper half of said lower rectangular opening 30b thereof is a water-back 31, having forwardly-projecting pockets 32, said water-back extending upwardly from a line just above the grate-bars to a point somewhat below the plane of the lower ends of the pockets 7, before referred to.

The rear end of the chamber 14 between the inner sides of the members is closed by a plate 48, placed in juxtaposition to the rear faces of the rearward sections, substantially as seen in Figs. 1 and 5, and so retained by securing a transverse extension 49 of the said vplate to the inner face of the frame 30, just below the lower edge of the upper opening 30EL in the said frame, which serves as a partition on the upper wall of a chamber 50, the lower wall of which is an inturned` ortion of the frame 30, as shown in Fig. 1. T is chamber 50 provides connection between the firechamber and the conduits or flues 8 to permit the products of combustion to pass from the fire-chamber up and over the water-back- 31, into the chamber 50, and thence into the conduits or fiues 8. Attached to and projecting rearwardly from the frame 30 and communicating with the conduits or flues 9 in the sections through the provision of the upper opening 30a in the frame 3() is a casing 34, serving as an exitpipe for the roducts of combustion, which pass forward y through the conduits or flues 8 and then rearwardly through the conduits or iiues 9 and out through the opening 3()a in the frame 30 and the exit-pipe, as aforesaid. (See Figs. 1 and 6.)

Beyond the frame 30 and spaced therefrom a suitable distance is a rear end wall 35,

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the same having a suitable opening through which the exit-pipe 34 projects, as shown in Fig. 1, and between the end wall 35 and the frame 30 is provided an air-chamber 36. Air maybe admitted into the chamber through an inlet 37 in the end wall 35, which is closed by a valve 38. The width of the inlet-opening and valve for closing the same is approximately the same width as the casing serving as the exit-pipe, a cross-section of which is seen in Fig. 6, and air entering the inlet 37 will pass down and around the opposite sides of the exit-pipe and take the direction indicated by the arrows in Fig. 1. It will be seen that the front of the furnace is provided, preferably, with a plate 39, having double doors 40 for access to the draft-passages. A single door 41 for the ash-pit and a door 42 for access to the fire-chamber are provided in the water-front. On the inner side thereof beneath the pockets 7 each section is provided with a downwardly-extending bafeplate 43, and each section is provided on opposite sides with grooves 43a, Figs. 2 and 5,

of semicircular cross-section, which coperate to form air-inlets 44, Fig. 1, beneath the baffleplates, thus enabling additional quantities of air to be admitted to the fire-chamber for producing a more intimate admiXture of the smoke and gases arising therein, with a minimum deposit of soot upon surrounding parts. I sometimes provide the opposite sections of the two series with perforated ribs 45 for securing said sections together, (see Fig. 4,) and, as also shown in said figure, it will be seen that instead of employing duplicate series of sections I may employ a single one only of each series, according to the capacity of structure desired.

The bottoms of the conduits formed by the alining openings 8 and 9 of the sections may be provided with suitable dampers 46, (shown in Figs. 1 and 2, although broken away in Fig. 1,) which are provided with a series of openings 47 therein. The upper and lower dampers are preferably connected by the straps or bars 51, as shown in Fig. 1, Which pass out through the front of the furnace and have attached thereto the rings 52, by means of which an operator may adjust the said dampers. Vhen the dampers are in the position shown in Fig. 1, a return draft is produced-that is, the products of combustion pass into the rear ends of the conduits or fiues 8 and from the same into the front ends of the conduits or flues 9 and out through the exit-pipe 34, as specified; but on sliding the dampers outwardly the openings 47 in the dampers are caused to coincide and communicate with the vertical passages 13, giving a straight draft from the fire-chamber to the exit-pipe through the conduits or iiues 9, which is an advantage when first starting the furnace or when it is desired to quickly heat the same.

The structure may be supplied with water at any suitable point thereoi and may also be provided with any suitable outlet fromwhich hot water may be taken to any point for consumption or use.

From the foregoing it will be seen that air will enter the air-chamber 36 through the lvalved inlet thereof and will pass downwardly upon opposite sides of the casing 34, forming the exit-pipe, as indicated by the arrows marked a in Fig. 1, and thence upwardly through the grate and fuel thereon into the fire-chamber above the fuel, Where it mixes with the gases and other products of combustion which pass upwardly and over the Water-back 31, as indicated by the arrows marked b in Fig. 1, into the chamber 50, thence forwardly through the conduits or iiues 8 and rearwardly through the conduits or flues 9, the ames and heat in the meantime impinging upon the surface portions presented by the inner parts of the structure and the products of combustion finally passing out through the opening 30a in the frame 30 and the exit 34, as is apparent. The structure is most eective and reliable in use, and it is thought the advantage and operation thereof will be fully understood without further elucidation.

On referring to Fig. 2 it will be seen that the lower portion of each boiler-section, beginning from the baffle-plate 43 and running downwardly, is tapered, making the section considerably larger at the base than at the point on a line with the baflie-plate. This feature not only reduces the grate-space to the proper proportion, but also accommodates an increased volume of water at a point where the return-headers 21 are connected, thereby preventing iiuctuations of water in the boiler and making it possible to keep a steady water-line in the boiler when using it for steam instead of water.

On referring to Fig. 3 it will be seen that the front oi the furnaceor casing is made of two parts, the upper portion preferably of solid cast-iron with the draft-doors and openings as shown, while the lower portion is hollow and is connected with the sections so as to allow a free circulation of water through the hollow portion. This lowerV portion, forming, as it does, the front of the fire-box and coming in contact with the combustion, adds materially to the heating-surface of the boiler.

In Fig. 7 I have illustrated a boiler in which the boiler-sections are substantially the same in structure as those already described, differing thereirom only in having the ribs 45 removed. In this form of boiler the sections at the sides of the boiler are not brought together at the top, as in the form of boiler already described, but the said sections are spacedl apart to permit the insertion therebetween of a boiler-dome 18";L of considtion of water and steam throughout the sections of the lboiler is brought about in precisely the same manner. ln this form of boiler, however, it is necessary to employ a water-back 22a. of considerably greater width than kthe ordinary back 31, and the grate 24Ea employed is wider, of course, than the ordinary grate 24,' otherwise the boiler structures are substantially identical. In constructing a furnace with a boiler provided with a dome of the form 18a it is necessary to provide special end plates, and the doors are wider or else set farther apart than in the form already described; but as such changes in the furnace structure are obvious a specific illustration thereof is regarded as unnecessary.

' Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A sectional boiler, comprising duplicate, hollow, separable sections arched at the upper portions thereof to form an intermediate chamber, the lower portions of the sections forming a fire-chamber and an ash-pit, an air-chamber communicating with the ashpit, and having a valved inlet, an exit for the products of combustion, a dome centrally of said sections above the same, and communicating vertical nipples supporting the dome upon the sections.

2. A sectional boiler comprising duplicate hollow sections provided at their upper portions with heads, having hanging members, said sections being formed with openings extending from front to rear thereof, the bottom parts of said members having branches connecting with the sections and formed with depending pockets.

3. A sectional boiler comprising duplicate hollow sections provided at their upper portions with abutting heads, having hanging members, said sections being formed with openings extending from front to rear thereof, the tops of said openings being in connection with the sections and formed with depending pockets.

4. A sectional boiler comprising duplicate hollow sections provided at their upper portions with coperating heads, having hanging members, said sections being formed with openings extending from front to rear thereof, the parts forming the bottom and top of each of said openings being formedwith depending pockets.

5. A sectional boiler, comprising duplicate series of hollow sections coperating at the upper portions thereof to form an intermediate` chamber, the lower portions of said duplicate series forming a fire-chamber and an ash-pit, headers connecting the sections of each series, a steam-dome connecting the sections of the two series, an air-supply, an exit for the products of combustion, and a waterback having forwardly-projecting pockets.

6. A sectional boiler, comprising duplicate series of hollow sections coperating at the upper portions thereof to form an intermediate chamber, the lower portions of said duplicate series forming a fire-chamber and an ash-pit, headers connecting the sections of each series, a steam-dome connecting the sections of the two series, an air-supply, an exit for the products of combustion and a waterback having forwardly-projecting pockets, said steam-dome extending within said intermediate chamber between the sections.

7. A sectional boiler, comprising duplicate series of hollow sections coperating at the upper portions thereof to form an intermediate chamber, the lower portions of said duplicate series forming a lire-chamber and an ash-pit, headers connecting the sections of.

each series, a steam-dome connecting the sections of the two series, an air-supply, an exit for the products of combustion and a waterback having forwardly-projecting pockets, said steam-dome extending within said intermediate chamber between the sections, and thefadjacent sides of the sections of each series being constructed with recesses to form air-inlet passages, substantially as shown and describe 8. A sectional boiler, comprising duplicate series of hollow sections coperating at the upper portions thereof to form an intermediate chamber, the lower portions of said du- IOO plicate series forming a fire-chamber and an ash-pit, headers connecting the sections of each series, a steam-dome connecting the sections of the two series, an air-supply, an exit for the products of combustion and a waterback Vhaving forwardly-projecting pockets, said steam-dome extending within said intermediate chamber between the sections, and the adjacent sides of the sections of each series being constructed with recesses to form air-inlet passages, substantially as shown and described, the inner surfaces of the sections having bafiie-plates located above the inner ends of said passages.

9. A sectional boiler comprising duplicate hollow sections provided at their upper portions with abutting heads, having hanging members and being formed with openings extending from front to rear thereof, the upper portion of adjacent sections being spaced apart for a portion of their length to provide vertical passages therebetween which are openings in the said sections, and the tops of said openings being in connection with the sections and formed with depending pockets.

10. A sectional boiler comprising hollow sections provided at their upper portions with cooperating heads, having hanging members and being formed with openings extending from iront to rear thereof, the upper portion of adjacent sections being spaced apart for a portion of their length to provide vertical passages therebetween which are adapted to be in communication with the openings in the said sections, the parts forming the bottom and top of each of said openings being formed with depending pockets.

1 l, A sectional boiler comprising duplicate hollow sections provided at their upper portions with heads, having hanging members, said sections being formed with openings extending from iront to rear thereof, the bottom parts of said members having branches connecting with the sections and formed with depending pockets, and said pockets being provided with a central partition, substantially as shown.

12. A sectional boiler comprising duplicate hollow sections provided at their up er portions with abutting heads, having anging members, said sections being formed with openings extending from front to rear thereof, the tops oi said openings beingv in connection with the sections and formed with depending poclrets, and said pockets being provided with a central partition, substantially as shown.

13. A sectional boiler comprising duplicate hollow sections provided at their upper portions with coperating heads, having han ing members, said sections being formed witgh openings extending from Jront to rearthereof, the parts forming the bottom and top of each of said openings being formed with depending pockets, and said pockets being provided with central vertical partitions substantially as shown.

14. A sectional boiler comprising duplicate hollow sections provided at their upper portions with heads, having hanging members and being Jformed with openings extending from front to rear thereof, the upper portions of adjacent sections being spaced apart for a portion of their length to provide vertical passages therebetween which are adapted to be in communication with the openings in the said sections, the bottom parts of said members having branches connecting with the sections and 'formed with depending pockets.

15. A sectional boiler, comprising duplicate, hollow, separable sections, arched at the upper portions thereof, to form an intermediate chamber, the lower portions of the sections forming a fire-chamber and an ashpit, the' adjacent sections formed with upper and lower intercommunicating openings to provide return-flues longitudinally disposed through the said sections, a closure for the rear end of the chamber formed intermediate the upper portions of said sections, an airsupply at the rear of the said boiler, an exit for the products of combustion in communication with the upper intercommunicating openings through the said sections and a dome centrally of said sections above the same, and communicating vertical nipples supporting the dome upon the sections.

16. A sectional boiler, comprising duplicate, hollow, separable sections, arched at the upper portions thereof to form an intermediate chamber, the lower portions of the sections forming a hre-'chamber and an ashpit, the adjacent sections formed with upper and lower intercommunicating openings to provide return-iiues longitudinally disposed through the said sections and the upper portion of adjacent sections being spaced apart for a portion of their length to rovide vertical passages therebetween whic are adapted to be in communication with the openings through the said sections, a closure for the rear end of the chamber formed intermediate the upper ortions of said sections, an airsupply at the rear of said boiler, an exit for the products of combustion in communication with the upper intercommunicating openings' through the said sections, and a dome central of said sections above the same, and communicating vertical nipples supporting the dome upon the sections.

17. A sectional boiler comprising duplicate, hollow, separable sections arched at the upper portions thereof to form an intermediate chamber, the lower portions of the sec-v tions forming a fire-chamber and an ash-pit, `the adjacent sections formed with upper and lower intercommunicating openings to provide return ilues longitudinally disposed through the said sections and the upper portion of adjacent sections being spaced apart for a portion of their length to provide vertical passages therebetween which are adapted to be in communication with the openings through the said sections, a closure for the rear end of the chamber formed intermediate the upper portions of said sections, dampers for shutting 01T the communication between the passages intermediate the said sections and the openings therethrough, means for operating the said dampers, an air-supply at the rear of said boiler, an exit for the products of combustion in communication with the upper intercommunicating openings through the said sections, and a dome central of said sections above the same, and communicating vertical nipples supporting the dome upon the sections.

18. A sectional boiler, comprising duplicate series of hollow sections coperating at the upper portions thereof to form an intermediate chamber, the lower portions of said IOO ISO

duplicate series forming a hre-chamber and van ash-pit, a frame spaced beyond the rear faces of the rearward sections of the duplicateA series and provided with upper and lowerl openings therethrough, the adjacent sections formed with upper and lower intercommunicating openings to provide returnflues longitudinally disposed through the said sections, a plate supported by the said frame and forming a closure for the rear endof the chamber formed intermediate the upper portions of said sections, an air-supply at the rear of the said frame adapted to have communication with the ash-pit through the lower opening in thesaid frame, and an exit for the products of combustion in communication through the upper opening in the frame with the upper intercommunicating openings through the said sections.

19. A sectional boiler, comprising duplicate series of hollow sections cooperating at the upper portions thereof to form an intermediate chamber, the lower portions of said duplicate series forming a fire-'chamber and an ash-pit, a frame spaced beyond the rear faces of the rearward sections of the duplicate series and provided with upper and lower openings therethrough, the adjacent sections formed with upper and lower intercommunicating openings to provide return-hues through the said sections, a plate supported by the said frame and forming a closure for the rear end of the chamber formed intermediate the upper portions of said sections, a steam-dome connecting the sections of the two series, a water-back disposed in front of the lower opening of the said frame and having forwardly-projecting pockets, an air-supply, and an exit for the products of combustion, the same being in communication with the upper intercommunicating openings through the said sections.

20.. A sectional boiler comprising duplicate series of hollow sections cooperating at the upper portion thereof to form an intermediate chamber, a closure for the rear end of lthe said chamber, the lower portions of said duplicate series forming a fire-chamber and an ash-pit, and the adjacent sides of the lower portions of the sections of each series being constructed with recesses lto form air-inlet passages, inwardly and downwardly projecti ing baffle-plates attached to the inner faces of said sections in front of the inner ends of said passages, an' air-supply controlled by avalve-inlet at the rear of the said boiler, and an exit for the products of combustion 21. A sectional boiler, comprising duplicate series of hollow sections having intercommunicating openings to provide returnflues through the said sections, and coperating at the upper portions thereof, to form an intermediate chamber, a closure for the rear end of the said chamber, the lower portions of said duplicate series .forming a nre-chamber and an ash-pit, and the adjacent sides of the sections of each series being constructed with recesses to form air-inlet passages, and bailleplates formed on each section and located in the front of the inner ends of said air-inlet passages, an air-supply controlled by a valveinlet at the rear of the said boiler, and an exit for the products of combustion, the same communicating with the upper openings through the said sections.

22. A sectional boiler, comprising duplicate series of hollow sections having intercommunicating openings to provide returnilues through the said sections, and coperating at the upper portions thereof, to form an intermediate chamber, a closure for the rear end of the said chamber, the lower portions of said duplicate series forming a fire-chamber andan ash-pit, and the adjacent sides of the sections of each series being constructed with recesses to form air-inlet passages, and baille-v plates vformed on each section and located in the front of the inner ends of said air-inlet tions of the two series, an air-supply controlled by a valve-inlet at the rear ofthe said boiler, an exit for the products of cornbustion, the same communicating with the upper openings through the said sections, and a water-back located at or near the rear end of the boiler and having forwardly-projecting pockets.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

MAURICE ALEX-COOK.

Witnesses:

WALTER G. CAUsEY, E. R. GRiMsoN. 

